Tractor



July l29;, 1930.

F. A. HALLECK TRACTOR @riginal Filed YApril 1o, 1924 3 sheets-sheet 1 N it? Q afwgws i i N i wg 5 is l n l NN m N m QQ mf* nl. y Y g gg July 29, 1930. F. A. HALLECK TRACTOR Original Filed April l0, 1924 3 Sheets-Sheet 2 July 29, 1930. F. A. HALLECK 1,771,625

TRAcToR Original Filed April 10, 1924 3 Sheets-#Sheet 3 Patented July 29, 193() i UNET STATE FRANK A. HALLECK, OF MCHGAN CTY, INDIANA, ASSIGNOR T0 SULLIVAN MA- CHINERY COMPANY, A CORORATION OF MASSACHUSETTS TRACTOR Original application led April 10, 1924, Serial No. 765,691.

Divided and this application filed January 11,

1927. seal No. 160,487.

treads whereby the machine may be fed in an i improved and more iieXible manner. `Yet another object of this invention -is to provide` improved plural speed transmission meansbetween the motor andV the tracklaying treads.` A more speciicobject of my invention is to provide, in ay plural speed transmission, mechanism whereby a Ifast. for` l ward and fast reverse speed can be obtained and aslow forward speed obtained by the l simultaneous operation of the fast'reveise and fast forward feed transmission means. TheseV and other objects and advantages of lg this invention will, however, subsequently more fully appear.

ln thel aecompaiiyiiigV drawings there is shown for purposes of illustration one form which the invention may assume in practice.

In these'drawings,+-

Fig. i is a side elevation of theimproved i loadingmachine, the view being partially broken away in sectiontogillustrate details of the improved-feeding mechanism.

Fig. 2 is a longitudinally extending ver-' tical sectionalI view. taken substantially on line 2;.-2 Vof Fig. 6. .i

Fig; .3 is a detail sectional view taken on line 3-3 of Fig. 7. Figs. 4C and 5 are detail viewsof Jthe controlliiigmechanism for the feed controlling clutches.

Fig-`6`is a transverse vertical sec-tional view takenlon line 6-6 of Fig. l. Fig. 7 is a horizontal sectional View taken substantially online 7-,7 of Fig. 1.

8 `is a detail sectional view taken sub-1 stan-tially on line 8-8of Fig. 7 and illustrating operating means for .the control fric-- tions.` s

Another object of this l known manner.

Fig. 9 is a detail sectional view taken sub-4 lustrating the brakes and operating means therefor.

In this illustra-tive form of the invention, which is a` division of my copending applica-r tion Ser. No. 705,691, filed `April 10,1924,

`there is shown a loadingV machine especially `stantially Von line 9-9 of Fig. 7 and iladapted for loading loose coal or other similar material; vand this machine generally comprises a machine frame l supported on endless traclrlayingtreads 2, the frame l being pivotally mounted at the rear end thereof on Vthe Atread structure about a horithe intermediate portion of this rocker armV isconnectedto the frame l iii a manner clearly described in copending application mentionedV above. As is usual .in trac-tion means of tlietraclrlayin'g treadtype, the treadframes 5 carry bearing` rollers 6 which lengage the tread chains so as to support the 'weigh-t ofthe machine vthereon.L The tracklaying treads 2 are adapted to be driven through improved plural speed transmission i means including drive sprockets 7 arranged coaXiallyA Ywith the frame pivot 13 andcooperating with the tread chains. The-forward `ends of'thetread chains are guided on frontidler wheel or roll-S'carriedl by the tread frames 5 and adjustably mounted thereon by usual adjusting means `9 to vary the tensionA of the tread `chains in a wellj As shown in Fig; l the vforward end `of the 4frame l has supported thereon a shovel memberor nose piece 10` havingA a Vtransversely extending Amaterial penetrating edge, while cooperating with the shovel member is a toothed feeding roller 1l supported for swinging movement on arms lQvpivotally Vmounted at 13 on the machine frame l. `The toothed roller is adapted to feed the material to be loaded downwardly and rearwardly onto the shovel member 10,

' the` materialbeing moved rearwardly from with a spur gear 19 keyed at 2O to ashaft 21l extending longitudinally of the machine and journaled in suitable bearings 22 carried by the machine frame. The shaft 21 has fixed thereto at 23 a member 24, the hub of this member having` fixed thereto a spur pinion 25 as shown in Figs. 2 and 7. The pinion 25 meshes with spur' gears 26 and 27, the latter meshing with a spur gear 28, the gears 26, 27, and28 beine4 rotatably mounted on shafts 29, 30, and 31 respectively, the latter in turn beingrotatably mounted in bearings 31afcarried by the upper partof the frame 1. The

gear 27 has a greater `number of teeth than either of thegears 26 and 28 which'have the same number of teeth, the purpose of which will be hereinafter fully described. 'llhe shafts 29, 30, and 31 have arranged ccaxially therewith worms 32, 33, and 34 respectively', as shown in Fig. 7. Suitable clutch mechanism is provided for connecting the gears 26, 27, and r28 to their respective shafts 29, 30, and31 for rotation therewith and such means is herein shown as of the well known expandingclutch type mounted within thegears and having usual fingers or other suitable expanding mechanism`35 adaptedV to engage a longitudinally'movable cone clutch `applying member 36actuated by usual shipper mechanism 37. The shafts 29, 30, and 31 have fixed thereto brake drums 38 as shown in Figs. 3 and 7 with which suitable brake bands V39 cooperate.

Referring more particularly to F 6 the means for driving the tracklaying treads 2 comprises separate right and lefthandnshafts 40 and 41 arranged coaxially with the pivotal axis of the machine frame 1 and the ends of these shafts have fixed thereto at'42'the driving sprockets 7 for the respective treads 2, said shafts 40` and 41 being rotatably mounted .within bearing sleeves V43 carried by Ahollow laterally projecting trunnionsv 44 suitably secured to the'sides of the machine frame 1.

|The trunnions 44 Yare in Yturn rotatably kthe invention theA shafts 40 and 41 have reduced inner ends 46 disposed in contiguity and rotatably mounted in bearing sleeves 47 48 carried by the lower side of the machine frame. The shafts 40 and 41 are adapted to be driven from the motor 15 through differential mechanisms generally designated 49 and 50 respectively. The construction of these differential mechanisms is somewhat similar to usual bevel gear differential mechanisms but has somewhat different connections with r'espect'to the shafts of the driving gears than is usually had. More specifically Y the construction of the differential 49 which is shown for illustrative purposes comprises a spider member 51 keyed to the shaft 40 and having radial stub shafts 52 upon which are rotatably mounted planetary bevel pinions 53; The bevel pinions 53 mesh with a bevel gear 54 rotatably mounted on the inner end of the bearing sleeve 43 andl supported on the shaft 40. The bevel gear 54 is fixed by a key5r6 to the hub of a worm gear 57, said worm gear 57 meshing withthe worm 32 so as to'be driven by the latter. The planetary bevel pinions 53 also mesh witha bevel gear 58 alined with the gear 54 and fixed to a sleeve 59 rotatably mounted in a bearing sleeve 60 carried by the bearing'bracket 48. The sleeve 59has fixed thereto a worm gear 61 which meshes with the worm 33 and is driven by the Ylatter;V rlfhe differential 50 is similar to the differential 49 and comprises a spider member 62 fixedto the shaft 41 and having radial stub shafts 63von which'planetary bevel pin-` ions64 are rotatably mounted. The bevel pinions 64 Vmesh with a bevel gear 65 fixed to the hub of the Vworm gear 61. pinions 64'also mesh with a bevel gear 66 rotatably mounted on the innerend of the bearingsleeve 43 and supported on the shaft 41 ,and this gear 66 has a hub portion fixed to the hub of a Worm gear 68, the worm 34 meshing with the worm gear 68 so as to drive the latter.

Suitable controlling mechanism is provided for the electric motor 15 and may be of any-standard type having 'ay usualV controller handle 69, while suitable control levers are provided forcontrolling the clutch and brake members vfor the shafts 29. 30 and 31. The

,controlling mechanism for Vthe clutches and The bevel in.'

.71 and 72 respectively (see Fig. 4) horizontally disposed and extending transversely of the machine, the shaft 72 being rotatably I mounted in suitable bearings carried by the machine frame. `The outer shaft 72 carries a bifurcated arm or yoke 73 having bearings 74 disposed on the outer end thereof and within 'which is rotatably mounted a shaft 75, the latter being disposed at right angles to the shafts 71 and 72. The shaft 75 has fixed thereto a bevel gear 76V meshing with a bevel gear 77 fixed to the shaft 71. Also carried by the shaft is an operating control lever 78 adapted when swung laterally of the machine to .actuate the shaftto cause partial rotationr of the transverse shaft 7l and also adapted to be swung-longitudinally of the machine to cause rotation of the arm 73 and consequently the outer shaft 72. Any

suitable linkage connection may be used to actuate the forward feed clutches, one form of whichis shown as comprisingoppositely extending arms 79 and. 8O fined to the inner shaft 71 and extending through openings in the outer shaft 72. Eachiof the arms 79 and 8O has a loose longitudinally slidable connection with pull rods 81 and 82 respectively, the outer ends of which have'enlarged abutment heads ornuts 83 adapted toengagethe arms 79 :md80 upon forward movement of either. The rod 82 is fixed to a pull rod 84 also having longitudinally slidable connection with an arm 85 fixed to the outer shaft 72 `and'having an abutment head ornut 86. The rods 81 and 84 entend vlongitudinally alongside of the machine frame to the rear end thereof to operate clutch throw-out linlrs andlevers 87. When the lever 78 is swung longitudinally of the machine the clutches on shafts 29` and 31 are simultaneously thrown into engagement, as both shafts 71 and 72 are simultaneously rotatable `to pull the `rods 81 and 84 while rod 82 'will slide through the. arm 80, whereas, if the lever 7 8 is swung transversely of the machine, only `one of the clutches on shafts 29 and 31 will be thrown into engagement to cause driving of only one i traclrlaying tread to thereby turn the ma-` chine, for the outer vshaft 72 will be held stationary while either of the arms 79, 8O will pull rods 81 or 82, depending upon whether lever 78 isthrown outwardly or inwardly to rotate the shaft 71 in opposite directions. It will be noted, however, that upon actuation of one rod the'other will slide through its respective arm, leaving one clutch free l Also carried by the machine frame substantially adjacent the lever 78 is av reverse lever 88 `pivotally mounted upon a horizontal shaft `89 extending transversely of the machine and suitably journaled thereon.AV The shaft 89 is adapted to control the clutch on the shaft 30 throughj suitable operating connections, a form of which is shown in Fig. 8. It, is to be noted `that this identical lever arrangement including Vthe levers 78 Vand 88 is dis-v posed onopposite sides of the machine` as clearly shown in Fig. 6 in such manner as to `brake operating means including a cani 90 on each brake and suitable independently operable operating means, a Vforni of which. is

shown in Fig. 9, for each cam.

- In describing the yoperation ofthe im-V 1. proved feeding mechanism for the loading machine it will first be assumed that the machine is standingstill with the `nose piece l0 and gathering roller 11 in position to penetrate and gather the material to be loaded, the nose piece 10 Vthen being lowered from the position shown in Fig. 1 to themine bot? tom.v If it is now Vdesired to feed the machine forwardly at a fast speed to penetrate the material the lever 78 is 'swung longitudinally of the machine, the brakes on shafts 29 and 31 being released, and the expanding clutches are applied connecting the vworms 32 and 34 and their respective shafts 29 and 31 to the gears 26 and 28 respectively. During Y such Voperation the brake on shaftV 30 is locked 64 orbitally around the stationary bevel gears- 58 and 65 which act as reaction gears. The stub shafts 52 and 63 of the two differential spiders will thereby'` be positively carried f around by the'pinions 53 and `64to cause a positive rotation of the right `and left hand Y shafts 40 and 41. If, however, it should be desired to turn the loading machine in one direction or the other one of the shafts 29 or 31 would be held stationary, while the other turns, the reverse shaft 30 also being held,

thus lallowing movement` of only one track` laying tread or the desired fractionalmove Y ment thereof. By suchaconstruction'it is possible to Zig zag themachine as a whole bodily into the `pile of. material to be loaded to cause the nose piece to penetrate the same with facility If itis now desired to impart fast reverse movement to Athe loading machine, shaftsr 29 and 3l will be held stationaryby their respective brale bands while the clutches thereon are disengaged and the rey verse mechanism actuated by shifting the. lever88 to throw the clutch mounted on the shaft 30 into engagement, the brake thereon l 'being first released, to positively drive said shaft which inturn will drive the wormgear 61 in a reverse direction to drive the planetary pinions 53 and 64 in a reverse direction around the bevel gears 54 and 66 which are now held stationary by the held or stationary shafts 29 and 31. It is to be noted (see Fig. 7) that the worms 32,` 33, and 34 have the same pitch but that the worms 32 and 34 .on shafts 29 and 31 are right and left hand respectively. Theworm gear 61 is driven in a Lr i direction opposite to that in which the4 worinV gears 57 and 68V are driven, due to the fact that one'side 'of the gear 25 meshes `with the gear 27, while the other side meshes with the gear 26, thus driving gears 26 and 27 in the same directions, while gear 28 will rotate in a direction opposite to the gear 2G, but the worm gears driven thereby will rotate in the same direction due to the right and left hand worms 32 and 34. After the loading machine has been fed rapidly upto the pile of material to'be loaded and it is desired to feed the same slowly'into the material during the loading operation, all the brakes on shafts 29, 30, and 3l are released and the clutch mechanisms therefor are simultaneously thrown into engagement, Vconnecting the Vworms 32, 33, and 34 and their shafts 29, 30, and 31 to the gears 26,27 and 28 respectively for rotation therewith. This, it will be seen, simul- V taneously operates both the fast reverse and fast forward feed mechanisms a-nd due to the diiferential action between the same a slow forward speed is obtained, the slow forward feed being obtained due to the fact that the gear 27 has a greater number of teeth than either the gear 26 or gear 28 so that the worin gear 6l has a slightly smaller angular velocity than do the worm gears 57 and 68. The smaller angular velocity of the gear 27, and consequently of the worm 33 and worm gear 6l in the reverse feed is due to the fact that the ratio of the gear 27 to the motor driving pinion 18 isgreater than the ratio of the gears 26 and v28 to saidrmotor driving pinion. The gears 27 and 25'merely act as transmission gears in the operation of the gears 26 and 28. Thus, during the slow forward movement, the'worm gear 6l drives the bevel l pinions 53 and 64; oppositely and at a slower speed than do the gears 57 and 68, the result beingthat the stub shafts 52 and 63 of the .respective'differential spiders will take a slow forward speed equal to theV difference between the speed of the respective bevel gears meshing with the bevel pinions anl this will drive the shafts l0 and al ata slow forward speed. It is therefore obvious that the slow forward speed Vis obtainedv by the simultaneous operation of the fast reverse and fast forward feeds. vThese and otherV operations and advantages of the improved loading machine will be clearly apparent to those skilled iii-this art. l Y A lVhile I have in this application specifically described one form which myinvention may assume in practice, it will be understood that this form of the samev is shownv for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

lVhat I claiml as new and desire to secure by Letters Patent is:

l. In a loading machine comprising traction means, driving means for said traction means including a motor and means driven by said motor` forffeedingthe machine forwardly and rearwardly including reverse and forward feeding-mechanisms and means for effecting simultaneous operation of said forward and reverse feeding nieclianismsto` worm including a clutch and brake, and means for effecting movement of said traction members on orbital movement of said planets.

3. In a loading machine, a motor, and feeding mechanism operated by said'motor including traction members, and operating and controlling means for said traction members including coaxial elements rotating on transversely extending horizontal axes, planet mechanism cooperating with said elements, horizontal worms operatively connected to said coaxial elements, control means for each worm including a clutch and brake coaxial with each of the same, and means for effecting movement of said traction members on orbital movement of said planets.

4L. In a loading machine, a motor, and feeding mechanism operated by said motor including traction members, and operating and controlling means for said traction members including coaxial rotatable elements, planet mechanism cooperating with said elements, gears operatively connected to said coaxial elements, means for rotating either of said gears while' the other is held stationary, means for holding stationary either of said gears while the other is rotated, and means for effecting movement of said traction members on orbital movement of said planets.

5. In a loading machine, a motor, and feeding mechanism operated by said motor including traction members, and operating and controlling means for said traction members including coaxial rotatable elements, planet mechanism Vdirectly cooperating with said elements, independently driven gears operatively connected to said coaxial elements and respectively constituting driving elements therefor, means for separately rotating either or simultaneously rotating both of said gears including a friction clutch controlling eachgear, and-means for effecting movement of said traction members on orbital movementof said planets.

6. In a loading machine, feeding mecha- Ynism therefor including a plurality of pairs f coaxial rotatable elements, planet mechaments includingthree gears including a central gear, thecentral gear driving an element of each pair, means for effecting rotation of said gears, and means for holding said central gear stationaryivhile said other gears continue to rotate.

7 In a loading machine, feeding mechanism therefor including a plurality of pairs of coaxial rotatablejelements, planet mechanism cooperating with the elements of each pair, and means for rotatingrsaid coaxial elements including three Worms including a central Worm, the central Worm driving an element of each pair, means for effecting rotationrof said Worms, and means for holding said central Worm stationary Whiley said other Worms continue to rotate.

8. In a loading machine, feeding mechanism thereforincluding a plurality ofpai-rs of like coaxial rotatable elements, planet mechanism cooperating With an element of each pair, means for rotating said coaxial elements including three gears including a central gear, the central gear driving an element of each pair, means to etlect rotation of said gears including means for rotating each of said gears at Will or holding it against rotation While said other gears continue to rotate, and separate traction meml bers each driven and controlled through one ISG Vof said pairs of coaxial elements.

. 9. In a loading machine, `feeding mecha- .i

nism therefor including separate traction members, driving membersth'erefor, a plurality of pairs of like coaxial rotatable elements coaxial With said driving members, planet mechanism cooperating With an element of each pair, and means for rotating said coaxial elementsl including three gears, the centralgearV driving an element of each pair and a clutch and brake controlling each gear. Y Y

l0. In a loading machine, feeding mechanism therefor including separate traction members, driving members therefor, a plurality ofpairs of like coaxial rotatable ele- Zontal transversely extending axes, planet mechanism cooperating Withan element ofV each pair, means for rotating said coaxial elements including three Worms, the central Worm driving an element of each pair, con- .v trolling means for said Worms including clutches for separately or simultaneously axial with each of saidvvorms, and separate-traction members each driven and controlled through one of said pairs of coaxial elements. Y

12. In aloading machine, feeding mechanism therefor including a plurality of pairs .of like Acoaxial elements rotating on hori- `Zontal transversely extending axes, planet mechanism cooperating vvith'an element of each pair, means for rotating said coaxial elements including three Worms rotatingon horizontal axes, the central Worm driving an element ofV each pair, means to effect rotation of said Worms including means for rotating each'of said Worms at Will or holding itagainst rotation, means for controlling rotation of said Worms including a driving clutch and a braking clutch coaxial `With 'eachvof said Worms, and. separate traction members each driven and controlled through one of said pairs of coaxial elements.

13. In a loading machine, a motor, and feeding means operated by said motor including tiaction members, and operating and controlling means for said traction members lincludingcoaxial rotatable elements, planet mechanism cooperating Withsaid elements -and operatively connected `to said traction members, Worm gearing including Worms opf connecting said Worms to said motor, one coi eratively connected to said coaxial elements, r

means for holding tWo of said Worms stationary during rotation of the third to efffectdriving of said traction members at one feeding speed,vmean s forholding said third ivvorm stationaryfduring rotation of the `first two to effect Adriving of said traction members -at a different. speed inthe reverse direction, and means for effecting simultaneous `rotation of said Worms to drive said traction members at another feeding speed.

14. In a loading machine, armotor, and

feeding means operated by said motor including traction members and operating and controlling means for said traction members includingcoaxial rotatable elements, planet mechanism cooperating With said elements and operatively connected toisaid traction members, Worm gearing including Worms operatively connected to said coaxial elements, means including brakes and clutches arrangedcoaxialwith said Worms for holding tvvo of said Worms `stationary during Arotation of the third to effect driving of said traction members at one `feeding speed, and ,1

for.V holding said thirdvvorm stationary during rotation of said firsttvvo to effect driving of saidl traction members at a different speed in the reverse direction and for eecting simultaneous rotation of said Worms to effeet driving offsaid traction members at another feeding speed. 15.`I1i a loading machine, a motor, an

Vfeeding means operated by said motor including traction members,and operating and controlling meansvfor said traction members in- ,cluding coaxialV rotatable elements, planet ,mechanism cooperating with said elements vments, and means including brakes and Y clutches coaxial with said worms for holding stationa y two of said worms stationary during rotaltionr of the third to eifect driving of said traction members at a relatively high speed in Vone direction, means for holding said third worm stationary during rotation of the first two tor effect driving of `said traction-membersI at a relatively high speed in the reverse direction, and means for effecting simulta- 4neous rotation of said worms to drive said i traction members at a relatively slow forward feeding speed.

.stationary during-rotation of the third to` effect driving of said traction members -to feed the 'machine in one direction, andwfor 'holding said third shaft stationary during ,rotation of said first two to effect driving of said traction members in the reverse direction.

lnl testimony whereof I affix my signature.

` FRANK-A. HALLECK.

16. ln a loading machine, a motor and feed- 1 ing means operated by said motor including traction members, and operating ,and controlling means for said traction members including coaxial rotatable elements, planet mechanism cooperating with said elements and operatively connected to said traction mem- A bers, gearing including gear elements operatively connected to said coaxial elements, means for holding two of said gear elements during rotation of the ythird to effect driving of said traction members at one .feedingspeech means for .holding said third `gear element stationary during rotation of `the first two to effect driving of said traction Vmembers at a different-speed in the reverse direction, and means for effecting simultaneous rotation of said gear elements to drive said traction members at another feeding speed. Y

`17. ln a loading machine, a motor and feeding means operated by'said motor including itraction members, and operating and controlling means for said traction members including coaxial rotatableelements, planet mechanism cooperating with said elements and operatively connected to said traction members,

gearing including gear elements operatively connected to-,said coaxial elements, means including brakes and clutches for holding two of said gear elements stationary during rotation of the third to eifect driving of said traction members at one feeding speed, and means for holding said third gear element stationary duringrotation of said first two to effect driving of said traction members at a different speed in the reverse direction and for-effecting simultaneous rotation of said gear elements to effect driving of said' trac- `tion members at another feeding speed. Y

18. In a loading machine, traction members, planet mechanism operatively connected to said traction members, and actuating means for said traction members comprising three shafts geared to said traction members through said planet mechanism, a motor, 

